Method and mill for rolling metal



Sept 5 E933 J. R. CGE

lMETHOD AND MILL FOR ROLLING METAL Filed Sepia. 28, 1932 'T Sheets-5h68?, 2

Sept 5, i933@ u. R. co5

METHOD AND MILL FOR ROLLING METAL Filed Sept. 28

Scep., 5, H333 J. R. @0E g HETHOD AND MILL FOR ROLLING BSETAL Filed Sept. 28, 1932 '7 Sheets- Sheet 4 sept. s', 1933.

J. R. COE

` METHOD AND MILL FOR ROLLING IIETAL 'r sheets-sheet s Filed Sept. 28, 1952 Sem., was, @j R, @E www@ METHOD AND MILL FOR ROLLING EIETAL Filed Sept. 28, 1932 '7 Sheets-Sheei 6 METHOD AND MILL FOR ROLLING METAL Filed Sept. 28, 1932 7 Sheets-Sheet 7 "Jim-ml Patented Sept.s 5, 1933y o 1,925,896 Marilou Arm MILL ron RoLLrNd rm'rgm James R. Coe, Waterbury, Conn., assigner to The American Brass Company, Waterbury, Conn., a corporation of Connecticut Application September 28, 1932 Serial N0. 635,216

2s cuties.-

This invention relates to a method and mill for rolling strip metal, and has for an object to provide an improved mill for rolling strip metal which may be employed to roll heavy bars from '5 approximately afhalf inch thick, 18" to 2t" wide, and 18 ft. long to 'a thickness of approximately one-sixteenth of an inch, and at which gauge the strips will beapproximately leeft. long. To accomplish this reduction it is necessary to pass brass or copper through the rolls four times, while with more refractory metals it may require a greater number of passes. Y

As considerable time is necessary to adjustthe, .rolls and euriliary mechanism to efi'ect the desired reduction, it is apparent that to avoid Waste of rolling time aconsiderable number of` bars 'or strips should be passed through the rolls otter each adjustment, and it will also he Aapparent that space must be provided for the storage of these bars together with mechanical means for handling them into and out oi' the storage zone, as they are tooheavy to be handled Icy a man, weighing anywhere up to seversl hundred pounds.

l have found that economical operation of such a mill requires the rolling oi at least 56 bars or strips in a notch, end l lieve also found that it is desirable to'store this metal between successive rolling operations in the torni oi coils, ynot only because the coils require a minimum amount or door space :tor this storage, lout because the motel runs strclehter through the rolls when coiled than it does when rolled out into hat strips oi greet length.

g InV o' to malte possible the ree-rolling oi hard metal from the coiled torni, l have found it nec essery to provide meclianicel ineens for straightening out the lest or tail end of the coil, and mechanical means for entering or sticking this tail end for the next pass or further reduction,

becsuse it would loe physicelly impossible for a man or nien to perform either ci these operations es in ac'cordunce with prectice when rolling colnperatively small light weicht coils ot soit i, anneeled metal. Also owing to the 'weicht of the liars and the difficulty encountered in entering them or sticking there into the rolls, it is impos= sible ier-the men to handle the fiat strips es deliv ered to the rnill, and it is therefore necessary to provide a mechanical means for elevating und sticking these hars into the mill.

Means for accomplishing thel various operations described alcove, and the arrangement of these means in connection with the mill together with this rnethod of rolling strip metal form my invention, a chief object of which is to reduce nostro the amount of labor and the loss of rolling time to a minimum. Y

In actual operation the bars are placed in a vertical pile on an elevator in front of rolls and raised until the top bar is on e. level with the line of contactzbettveen the rolls and @slightly above the top edge of a guide table, in which position its back end is engaged by an air operated pusher by which it is pushed forward until lthe v front end engages with the working rolls. and 5 enters between them. After passing through thel rolls, which rnc-,y be of any standard design, altho they are preferably of the e-high type to permit heavy reductions, the metal passes through a' suitable coller, such as a B-roll coller equipped with a power operated ejector, by means of which the coils are delivered on to a travelling conveyor running'Y away from the rolls a sulcient distance to provide storage room or a given number of coils, in the present instance about 25 colla-each approximately 2 feet in diameter.

At the baclr end of this conveyor the coils are deposited one by one on to horizontal supporting rolls and turned hy en operator until the hoch or tail end oi the coil is on top, end it is then pushed sidewise loy a suitable pusher to o position in front of o coil opener. "in this position they are clamped ogainst rotary movement while stechenical means engages the heck or tell end and pulls it arvey from the coil and rolls it over a forni to such shape that when the teil is released hy the opener it will project tangentielly iroin the coil e sumcient distance to permit its eosin entered and stuclr into the rolls. After the tail endhas heen straightened the coil is released and moved to e position in front a return conveyor on which it is pushed by suitable ineens.

This return conveyor entends lecci: toward the rolls and provides additional storage room for say smother 25 coils, the firsti olf which. will loe baci; at the rolls ready for rfa-rolling when the last of the originel batch of 5G here or coils hes passed througl'i the rolls end the coller. it this time the rolls'and coller will loe adjusted for the next pass, end if the metal is fed to the rolls in the form or straight hars the elevator is lowered and a guide table or carriage carrying e support ijor a coil is drown baci; from the rolls into e position to receive the coils of the' metal as they are delivered by the return conveyor. This guide carriagehas means for guidin7 the metal into the rolls `tooth when it is in the crm of bars for the rst pass or in the form of coiled strips for succeeding passes, and the coils delivered by the return conveyor are placed one by one in position lil-Il in front of the rolls with the straightened tail end in proper positionv for stricking in the rolls. Mechanical means then stick the end into the rolls and the batch of coils is again rolled with the new setting of the rolls. |Ihe metal is then again coiled as it leaves the rolls, the coils are deposited on the storage conveyors, the tail end straightened and after the batch has been rolled the rolls are again reset and the coils of the batch again brought to the rolls and re-rolled and recoiled. Thus in this operation the batch is rolled with a given setting of the rolls, stored on the conveyors, the rolls reset and then again rolled with the resetting, and these operations are carried on as many times as is required to reduce the metal to the desired thickness.

In the accompanying drawings are shown mechanisms and an arrangement of these mechanisms for rolling these strips of metal as above outlined.

In these drawings: v y

Fig. 1 is a top plan view showing somewhat diagrammatically the relative arrangement of the vvarious mechanisms;

Fig. 2 is a side elevation thereof; Fig. 3 is a partial side elevation and partial vertical section of the means for feeding and sticking the bars into the rolls;

Fig. 4 is a vertical section of the front end thereof;

Fig. 5 is a top plan view of the pusher head;

Fig. 6 is a side elevation thereof on a larger' scale showing a pusher in position to engage the end of a bar; i Fig. 7 is a similar View showing a pusher raised above the bar;

Fig. 8 is a side elevation of the feeding and sticking mechanism as used for a coil of metal;

Fig. 9 is a top plan view thereof Fig. 10 is a transverse section substantially on line 10--10 of Fig. 3:

Fig. 11 is a transverse section substantially on line 11-11 of Fig. 9;

Fig. 12 is a side elevation of means for clamping the coils to hold them for straightening out the tail end, the clamp being in retracted position;

Fig. 13 is a top plan view thereof; Fig. 14 is a transverse section substantially on the line 14-14 of Fig. 12;

Fig. 15 is a view substantially on the line 15-15 of Fig. 12;

Fig. 16 is an end view as indicated by line 16-16 of Fig. 13;

Fig. 17 is a side elevation of the clamp showing it in position for holding a coil, parts being in section to more clearly show the construction; Fig. 18 is a side elevation of the device for straightening the tail end of the coil, showing it in the position of just gripping the end of the coil preparatory to the straightening operation;

Fig. 19is a sideelevation of the upper portion of the device showing the position in fstraightening the end of the coil;

Fig.20isanendviewofthecoilwiththetail end straightened: y

Fig. 21 is a side elevation of the coil supporting, guiding and sticking mechanism at the front of the rolls; Fig. 22 is a top plan view of the mechanism for transferring the coils from the return conveyor to the coil supporting and feeding means in the front of the rolls Fig. 23 is a front elevation thereof; and

Fig. 24 is a cross section on line 24-24 of Fig. 22. y i

on the assembled drawings Figs.v 1 and 2 is shown the relative positions of the various mechanisms in respect to the rolls and to each other. The rolls are mounted in the usual housings 25, and as indicated above are preferably ofthe 4- high type, although not necessarily so, comprising smaller working rolls 26 and larger backing rolls 27. At the front of the rolls is the elevator 28 for carrying a stack of metal bars to be rolled piled one on' top of the other and a pusher mechanism 29 for pushing the bars into the rolls., .Also at the front are the guide table 30 and the coiled metal sticker 31. To the rear of the rolls is the coiler 32 and the storage conveyor 33 to receive the metal from the coller and transfer it rearwardly to the device 34 for straightening the tail end of the coil. After the tail end is straightened the coil is deposited n the second storage conveyor 35 running forwardly to the transfer mechanism 36 by which the coils are successively transferred to the coil supporting means associated with the table 30.

, As indicated above, before the first pass through the mill the metal is in the form of straight bars approximately a half inch thick and eighteen feet long. In width they may be anywhere up to 24 or 30 inches. They are delivered to the mill piled one on the other. Referring to Flgs.'3 to 7, the dat metal elevator 28 comprises a platform consisting of a channel frame 37 on which are mounted idler rollers 38. The platform is mounted on two screws 39 threaded into rotatable nuts 40 carried on thrust bearings 41 in a supporting bracket 42. The nuts may be revolved in either direction by means of worm wheels 43 engaging with worms 44 driven by shafts 45 connected to an operating motor 46. In regular operation the vertical piles of metall strips 47 are placed on the rolls 38 on a table 28a and pushed forward toward the mill 25 until the front end engages the stop plate-i8 on the rear section 49 of the guide table to be more fully described later. These bars are lifted by means of the elevator 28 operated by motor 46 until the top bar 47 is above the top oi' the guide table and directly in line with thev line of contact between the work rolls 28 as indicated in Figs. 3 and 4.

In this position the top bar is engaged at its rear end by the heel 50 on the shoe or slipper 51 `keyed to a shaft 52 mounted in bearings in a cross head 53. This cross head is mounted to slide on a suitable guide, such as the I-beam 54. Also mounted on the shaft 52 is an upright arm 55 connected by a link 58 to a piston rod 57 operated 130 by a piston (not shown) in an air cylinder 58 mounted in suitable brackets 59, which may also be mounted on the beam 54 o n 'which the crossl head 53 may slide back and forth. The cross head carries a supporting bearing 60 for the piston rod 57 and in which it is free to slide, and the head also carries anadjusting screw 61 adapted to be engaged by a stop 62 on the arm 55 to limit the forward movement of this arm and therefore the downward movement of the shoe 51 during the forward or pushing stroke.

The cross head also carries an abutment 63 to limit the backward movement of the arm 55 and the uplift of this shoe 51 during the backward or return stroke for engagement with the succeeding bar or strip of metal when raised into the sticking position by the elevator 28. When the top bar 47 is pushed forwardly by the shoe 51 it passes under a guide roller 64 on the section 49 of the guide table and is therefore prevented from jump- Lacasse ing upwardly. This roller also prevents more than one bar at a time being pushed into the mill. The operation of the piston in the cylinder 58 may be controlled by any suitable means, such as a valve controlling the passage of air through the pipes. 66 and 67 leading to opposite ends of` this peg is removed when the fiat straight bars the cylinder.

lt will be evident that when the cross head 53 is forced forwardly by the/piston rod 57 the arm 55 is forced forwardly against the stop 6l lowering the shoe 51 to such a position that its upwardly curved forward portion 68 rests on the .top of the upper bar 47 and the heel \or shoulder 50 will engage the rear end 47a of this bar as indicated in Figs. 3 and 6. As the cross head is advanced the shoulder 50 pushes the top bar Li7 forwardly into the rolls 26 and therefore sticks the forward end into the mill. After the bar has been properly started in the mill the cross .head 53 is Withdrawn or shifted backwardly. As

this is done by pull on the rod 57 it will be evident that during the backward movement the lever` 55 is against the stop 63 and the shoe 51 is raised above the pile of bars as indicated in Fig. 7. After the bar 47 has passed oi the pile of bars the elevator 28 may be operated to raise the next bar to the proper level or above the edge of the stop 48, and then the cross-head 53 Yand shoe 51 again advanced to push this second bar into the mill and so on until all the bars have been rolled.

u The guide table and coil sticker 39 and 31 is composed of two sections `19 and 99, and section Li9 is mounted on wheels 79 running between the flanges of I-beam 71, the front ends of which are connected to the roller housings 25 by suit'- able brackets 72. while the rear ends are supported on cross beams 73. The beams 71 are spaced sufficiently far apart to allow the elevator 28 to rise and fall between them and these beams support an air cylinder 7d connected to the carriage or table section 49 by means of a cross head 75 and links 76 pivoted to this carriage at 77, and form means by which the carriage 49 may be shifted toward and from the rolling mill. This carriage or section 49 carries the baci: plate 48 against which the forward ends of the flat bars abut as described above when theelevator is in use, at which time the guide table and associated elements of the coiled metal sticker have been pushed in to the extreme forward position against the rolls. While the fiat bars are being stuck into the rolls this plate 48 serves to hold back all the bars except the top one indicated at 47, which is raised by the elevator to a level just above the edge of this plate and on a level with the line of contact between the working rolls 29. As the top bar passes to the mill it is guided on the top 78 of the guide table and under the roll 84 attached to this guide carriage and table by the brackets 79. This roll 64 maires it impossible for more than one bar to enter the rolls at the same time even though the elevator may be raised too high.

On the top of the guide table or section 99 are mounted two side guides 89 inclined outwardly at the forward ends 81, and they may be adjusted laterally, by loosening bolts llili havimheads in transverse i'slots 85, to correspond with the width of the bar being rolled. They are of a suicient length to cause the metal to enter the rolls in a straightline andperpendicular to the axis of the roll. These guides are used 'as guides for the metal only when fiat strips are being rolled and are used to position a wooden peg 82 when coiled strips 'are being rolled. This wooden peg 82 is supported on the guides 80 by a pivot rod 93a and extends under a bar 83. This wooden peg 32 acts to hold Idown the free end of a coil of metal as it is being stuck into the rolls as will be more fully disclosed later. As indicated above indicated at 97 are being rolled so that these `bars are guided by the guides 89.

conveyor 33, which is preferably of the slat type and runs directly away from the rolls and coiler a sudicient distance to provide storage room for any desired number of coils, in the present instance 25 coils, indicated at 89 of approximately 2 feet in diameter, this conveyor being operated by any suitable means, such as a motor 99 operating through suitable gearing 91.

At the rear end of this conveyor is located a coil opener or device' for pulling away the last or tail end of the coil and straightening it so that it can be stuck into the rolling mill for the next rolling operation. At the rear of the conveyor 33 are mounted two horizontal rolls 92 mounted on the roller bearings and on to which the coils are ldelivered in succession as they drop off the rear end of the conveyor 33. These rolls permit easy rotation of the coil by an operator to bring the exposed end of the coil, indicated at 93 in Fig. 19, to the top of the coil. These rolls 92 are mounted in a fioor stand 9.4 which also forms a traclr for a carriage or car running on wheels 99. This carriage has upright horns-97 between which isV mounted a 3-arm beam or lever 93 on a pivot' 99; This lever 98 carries on its front arm a pressure plate or shoe 199 which is plvoted to the arm at 101 and istransversely curved on its lower face to fit the curvature on the inside of a coil oi metal, while a counter-weight 192 is adjustably mounted on the rear arm of this lever. The vertical arm 193 of the lever is connected to a piston rod 199 by which it may be operated baci: and forth by the piston 195 in an air cylinder 199. The car 95 carries a pusher 197 which is adjustable as indicated at 198 on the carriage to suit various widths of metal forming the coils.

In normal position as indicated in llgs. 12 and 13 this carriage 95 is retracted so that the shoe or clamp 199 is located to the right of the rolls 92 when the coil from the conveyor 33 is deposited on these rolls as indicated in Fig. 15. This coil is then rotated by an operator to bring the free end 93 at the top. Air is then supplied to the cylinder 196 to force the piston 195 forwardly. As the counter-weight 192 weighs considerably more than the pressure plate or clamp 199 and is sufficient to overcome friction oi the wheels 99 of the carriage, forward motion of the piston rod 199 will move the car 95 to the ,left with the pressure plate 199 in its upper position until iso the pusher 197 strikes the edge of the coil 99 by the roller.

110, whichv rolls are directly in front of the mechanism for opening and straightening the tail end o1' the coil.

This device for opening and straightening the tail end of the coil is shown more clearly in Figs. 18 and 19. In these gures the coil 89 is shown clamped by the shoe 100 against rotation on the heavy rollers 110. The coil opener proper consists essentially of two mechanisms, the first being a hook 111 designed to engage with the exposed end 93 of the metal coil and pull it back in a substantially horizontal plane beyond the path of the second mechanism which consists of a roller 112 arranged to move down in an inclined plane between the coil and the pull back device 111 until the metal is in contact with an inter-changeable form 113. This roll is then moved back and down to bend and roll the metal over this form, the shape of which is such that the metal will spring back to a straight line extending tangentially from the 'coil when released The hook 111 is pivoted at 114 on a cross head 115 slidably mounted in channels 116, and the hook is normally held in a horizontal position by spring 117. The cross head 115 is rolled back and forth by piston rod 118 operated by a piston in an air cylinder 119. f

The roller 112 is mounted between channels 120 forming the sides of a sliding frame and is movable up and down in the rocking frame 121 by means of a piston rod 122 operated by a piston in an air cylinder 123 mounted to rock about the pivots 124, the form 113 is carried by' a channel frame 125 between the side members 120 in which position it will not interfere with the vertical or horizontal positioning of the roll 112. The frame 121 ispivotally connected at 126 tc a piston rod 127 operated by a piston of an air cylinder 128 mounted to rock on pivots 129.

In the operation of straightening the tail end of the coil after the hook 111 engages the free end of the coil as indicated in Fig. 18 the hook is drawn to the right by the air cylinder 119 as indicated in Fig. 19. This pulls the free end or `tail portion to the position 130 in Fig. 19 at which time the roller 112 is drawn downwardly against this drawn out tail portion, as indicated by the broken line, by means of the air cylinder 123. This roller 112 pressesthe tail piece 130 against the form 113 and then the air cylinder 128 draws the frame 121 and the roller 112 to the right as shown in Fig. 19. Thus while the cylinder 123 holds the roller 112 tightly down against the strip 131 on the form 113 the cylinder 128 draws it to the right and therefore rolls the metal over this form. The form is of such shape that when the end of the coil is released after the roller 112 passes over it, it will swing back to the straight position as shown in Fig. 20.

After this tail end of the coil has been straightened the coil is released through the air cylinder 106 withdrawing the piston rod 104 to the right as viewed in Figs. 12 and 17. The first effect of this, of course, is to raise the clamp 100 from the coil and release it, and then continued movement of the rod 104 withdraws the clamp and the carriage 95 to the position of Fig. 12 where it is ready for the next coil.

The coil on which the tail end has just been straightened is run on the rollers 110 and 132 to a position in front of the return storage conveyor 35 from which position it can be pushed on to this conveyor by the pusher 133 operated by the air cylinder 134.

This conveyor 35 extends substantially parallel to the conveyor 33 and spaced to one side thereof so' as to conduct the coils with the tail ends 130 pulled out straight back to a position forwardly of the rolls 26, and this conveyor may be operated by any suitable means, such as a motor 135. This conveyor is of a sufficient length to store any given number of coils, in the present y instance 25, so that with the conveyor 33, 50 coils can be stored by these conveyors between each setting of the rolls 26. After the entire batch of 50 bars have been rolled and coiled as described the rolls 26 can be set for the next rolling operation and the wooden peg 82 can be mounted between the guides for holding the free end of the coil while sticking it in the rolls.

A section 69 of the guide table and coil sticker is i'n the form of a carriage slidably mounted on the track-beam 7l and the upper front end of which, indicated at 136, forms a short guide-table on which the side guides 137 are adjustably mounted as by bolts 138 operating in transverse T-slots. Mounted in a bearing 139 on one side of the carriage 69 is a shaft or spindle 140 which supports a revolving horn or drum 141, and a number of spacing rings 142 may be placed on this shaft between thedrum and the side of the carrier and can be used to locate the drum to suit the width of the metal being rolled. As shown. the shaft 140 projects a certain distance beyond the drum 141 and the bearing 139 and therefore when the carriage 69 is advanced to its forward position the ends of this shaft engage` in the bearings 143 on brackets 144 fastened be. tween the roll housing to limit forward movement of the carriage or sticker, and also support the coil being roller. Adjustable stop'136a engages bracket 144 to limit forward movement of the carriage-69. This is the position after the coil sticker has been advanced from the loading position indicated in Figs. 9 and 10 to the sticking position shown in Fig. 21, and also in Fig. 3. Brackets 144 carry an idle roller 145 to hold a wooden peg 82 down in its proper position when in the forward position.

The mechanism for feeding the coils from the conveyor 35 to the coil sticker is shown more clearly in Figs. 11, 22 and 23. At the discharge end of the conveyor 35 are two horizontal rolls 146 on which the coils 89 with the tails 130 straightened out are deposited from the conveyor 35. These rolls 146 are at right angles to the track-beam 71 and form guides on which the coils 89 can be pushed sidewise from the conveyor 35 to the horn or coil support 141. For this purpose a pusher 147 is operated back and forth by a piston rod 148 connected to a piston in an air cylinder 149. An operator operating the valve 150 may control air pressure through the pipes 1.31 for supplying air to the opposite ends of the cylinder 149. As the coil 89 is deposited from the conveyor 35 to the rolls 146 it is turned to a position by an operator with the straightened tail end 130 in an upright position as shown in Fig. 8. Then the operator advances the pusher 147 and pushes the coil on to the drum 141. An operator then advances the carriage 49 by means of the cylinder 74 which causes the wooden peg 82 to push the tail end 130 down into the horizontal position on top of the short table 136 as indicated i'n dotted lines 130a, Fig. 8. The free end in this position is between the guides 137. As the carriage 49 continues to move forwardly a prescoil of metal, means at the rear ot the mill for coiling a ,strip as it leaves the mill, storage conveyors for a plurality of coils one extending rearwardly from the mill and the other at one side thereof, means for pulling out and straightening the tail ends of the coils, means for transferring the coils from the rst to the second conveyor, and means for transferring the coils in succession from the second conveyor to the support at the front of the mill.

8. In a device for rolling metal, a rolling mill, means at the front of the mill for supporting a coil of metal, means at the rear of the mill for coiling a strip as it leaves the mill, storage conveyors for a plurality of coils one extending rearwardly from the mill and the Votherl at one side thereof, means for transferring the coils from the first to the second conveyor, means for transferring the coils in succession from the second conveyor to the support at the iront of the mill, and power operated means for sticking the tail end of coil between the rolls of the mill.

9. In a device for rolling metal, a rolling mill, means at the front of the mill for supporting a. coil of metal, means at the rear of the mill for coiling a strip as it leaves the mill, storage conveyors for a plurality of coils one extending rearwardly from the milland the other at one side thereof, means for holding a coil to prevent its turning, means for pulling out and straightening thetail end of the held coil, means for transferring the coils in succession from the second conveyor to the support at the front of the mill, and power operated means for stickingl the straightened end of the coil between the rolls of the mill.

10, In a device for rolling metal, a pair of rolls, a support for a pile of nat bars one on the other in front of the rolls, an elevator mechanismr for raising Aand lowering the support, and means for pushing the bars one at a time from the pile and sticking them between the rolls comprising a pivotally mounted shoe provided with a surface to rest on the top bar and a.l shoulder to engage the rear end of the bar, and means for advancing the shoe to feed the bar between the rolls.

11. In a device for rolling metal, a pair of rolls, an elevator at the front of rolls for raising and lowering a pile of superimposed flat bars, a pusher device comprising a shoe forlengaging the rear end of the top bar of the pile, means i'or operating the shoe to stick the bar between the rolls, and a guide means for the bar between the elevator and the rolls.

12. In a device for rolling metal, a pair of rolls, an elevator at the front of the rolls for raising and lowering a pile of superimposed flat bars, a pusher device comprising a reciprocating head, a shoe pivotally mounted on the head and provided with a shoulder to engage the rear end of a bar on the elevator, a lever connected to the shoe operating between stops to limit its movement in opposite directions, and a power operated means connected to the lever for operating it and the head in opposite directions.

13. In a device for rolling metal, a, pair of rolls, means at the front of the rolls for feeding the metal thereto, a coiler at the rear of the rolls for coiling the strip as it leaves the rolls, a storage conveyor extending rearwardly from the coiler, means at the rear end of theconveyor for holding a coil in a given position, means for pulling out and straightening the tail end portion of the held coil, means for returning the coil to a position in front of the rolls, and means -block carried by the forward arm oi' the lever,

for sticking the straightened end between the rolls.

14. I`n a device for rolling metal, a pair of rolls, means for coiling a strip as it leaves the rolls, a conveyor for the coiled strips extending rearwardly from the rolls, supporting rolls for a coil at the rear end of the conveyor, means for clamping a coil on the rolls comprising a reciprocating bar, a lever pivoted on said car, a clamping a counter-weight carried by the rear arm of the lever and considerably heavier than the clamping block, an upright arm on the lever, and power means connected to the latter arm for operating the lever and reciprocating the head.

15. In a device for rolling metal, a pair of rolls, means for coiling a strip as it leaves the rolls, a conveyor for the coiled strips extending rearwardly from the rolls, supporting rolls for a coil at the rear end of the conveyor, means for clamping a coil on the rolls comprising a reciprocating car, means` carried by the car for pushing a coil 'longitudinally of its axis, a lever pivoted to the car, aclamping blocl: carried by one arm of the lever. an overbalancing weight carried by the other arm, an upright arm on the lever, a iluid pressure operated rod connected to said arm, and means for limiting forward movement of the car under operation of the rod to cause the lever to tip and clamp the coil. 105

16. In a.device for rolling metal, a pair of rolls, means for coiling .a strip as it leaves the rolls, a storage conveyor for receiving the coils from the coiler, means associated with the conveyor for pulling out and straightening the tail end of a coil comprising means for clamping the coil against turning, means for gripping the free end of the coil and pulling it away from the coil, a curved form, and means for bending the pulled out end over the curved form.

17. In a device for rolling metal, a pair of rolls, means for coiling the strip as it leaves the rolls, and means for pulling out and straightening the tail end of the coiled strip comprising means for clamping the coil against turning, a hook to engage the free end of the coil, means for drawing the hook away from the coil to pull out the tail end of the coil, a curved form, and means for rolling the pulled out end over said form.

18. In a device for rolling metal, a pair of 125 rolls, means for coiling the strip as it leaves the rolls, and means for pulling out and straightening the tail end of the coiled strip comprising means for clamping the coil against turning, means for pulling the free end away from the coil, a curved form, a roll mounted to reciprocate toward and from the form, a pivoted support for the roll to permit it to run over the form, means for shifting the roll to carry the pulled out end of the coil against the form, and means for swinging the support on its pivot While the roll is against the form to roll the pulled out end portion over said form.

19. In a device for rolling metal, a pair of rolls, means for coiling the strip as it leaves the rolls, and means for pulling out and straightening the tail end of the coiled strip comprising means for clamping the coil against turning, a hook to engage the free end of the coil, a'iluid 145 pressure cylinder to shift the hook Ato draw out said free end from the coil, a curved form, a roll,

a iluid pressure cylinder for drawing the roll against the drawn out end portion to press it against the form, and means to shift the roll 150 while in this position to roll they end portion against the form.

20.1In a device for rolling metal, a pair of rolls, means for coiling a strip as it leaves the rolls, a storage conveyor extending rearward of the coller to receive the coiledstrips, means for drawing out and straightening the tail end por tion of the strip, a storage conveyor for conveying 'the coils with theV straightened tail end portions to the front of the rolls, a support forward-V ly of the rolls for a coil, means for transferring a coil .from said second conveyor to said support with said tail end in an upright position, and means movable forwardly toward-the rolls to position said tail end and insert it between the rolls. g

2l. In a device for rolling metal, a pair of rolls, means forcoiling a strip as it leaves the mill, storage conveyors for the coils at the rear of the mill, means for pulling out and straighten ing the tail ends of the coils, means at the front of the mill comprising a reciprocable carriage, a support'for a coil on said carriage, means for transferring a coil from one of said vconveyors to said support, a second reciprocable carriage,

means on the second carriage for positioning the free tail end portion o1' a coil on said support.

and means for advancing the carriage toward the rolls to stick said free end'portion between the rolls. i

22. In a device for rolling metal, a pair of rolls, means for coiling a strip as it leaves the rolis, means for drawing out and straightening the tail end portion of the coil, a reciprocable carriage at the front of the rolls, a support for a coil on said carriage, means for transferring a coil with the straightened tail end portion'to said support, a guide on the carriage for said strip,

a second reciprocable carriage, means bn the second carriage to engage said free end and position it in the guide, and means for shifting the carriages toward the rolls in succession to first position the free end portion in the guide andv then insert it between the rolls.

23. In a device kfor rolling metal, a pair of rolls,

means at the front of the rolls for feeding the Y metal thereto, a coiler at the rear of therolls for coiling the strip as it leaves the rolls, means for pulling out and straightening the tail end of the coil, means for returning the coil to a position infront of the rolls, and means for sticking the straightened end between the rolls.

JAMES R. COE. 

